Motion sensor



FIG. 1 is a front elevational view, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is an opposite side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof. 

The ornamental design for a motion sensor, as shown and described. 